package com.qf.web.controller;

import com.qf.utils.StringUtils;

import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;

/**
 * projectName:day15_myxiaomi
 * author:lcy
 * time:2023/11/30 19:39
 * description:
 */
@WebServlet("/goodsImgs")
public class GoodsImgsServlet extends HttpServlet {
    @Override
    //goodsImgs?pic
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        String pic = request.getParameter("pic");
        if(StringUtils.isEmpty(pic)){
            return;
        }
        String basePath=this.getServletContext().getRealPath("WEB-INF"+ File.separator+"images"+File.separator+pic);
        File dir=new File(basePath);
        if(dir.exists()){
            FileInputStream fis=new FileInputStream(dir);
            ServletOutputStream os = response.getOutputStream();
            byte[] buf=new byte[1024*8];
            int len;
            while((len=fis.read(buf))!=-1){
                os.write(buf,0,len);
            }
            fis.close();
            os.close();

        }
    }

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        this.doGet(request, response);
    }
}


